#include "synaptics.h"
#include "logips2pp.h"
+#define DRIVER_DESC "PS/2 mouse driver"
+
MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
-MODULE_DESCRIPTION("PS/2 mouse driver");
+MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
static char *psmouse_proto;
printk(KERN_WARNING "psmouse.c: bad data from KBC -%s%s\n",
flags & SERIO_TIMEOUT ? " timeout" : "",
flags & SERIO_PARITY ? " bad parity" : "");
- if (psmouse->acking) {
- psmouse->ack = -1;
- psmouse->acking = 0;
- }
- psmouse->pktcnt = 0;
+ psmouse->nak = 1;
+ clear_bit(PSMOUSE_FLAG_ACK, &psmouse->flags);
+ clear_bit(PSMOUSE_FLAG_CMD, &psmouse->flags);
+ wake_up_interruptible(&psmouse->wait);
goto out;
}
- if (psmouse->acking) {
+ if (test_bit(PSMOUSE_FLAG_ACK, &psmouse->flags)) {
switch (data) {
case PSMOUSE_RET_ACK:
- psmouse->ack = 1;
+ psmouse->nak = 0;
break;
+
case PSMOUSE_RET_NAK:
- psmouse->ack = -1;
+ psmouse->nak = 1;
break;
+
+ /*
+ * Workaround for mice which don't ACK the Get ID command.
+ * These are valid mouse IDs that we recognize.
+ */
+ case 0x00:
+ case 0x03:
+ case 0x04:
+ if (test_bit(PSMOUSE_FLAG_WAITID, &psmouse->flags)) {
+ psmouse->nak = 0;
+ break;
+ }
+ /* Fall through */
default:
- psmouse->ack = 1; /* Workaround for mice which don't ACK the Get ID command */
- if (psmouse->cmdcnt)
- psmouse->cmdbuf[--psmouse->cmdcnt] = data;
- break;
+ goto out;
}
- psmouse->acking = 0;
- goto out;
+
+ if (!psmouse->nak && psmouse->cmdcnt) {
+ set_bit(PSMOUSE_FLAG_CMD, &psmouse->flags);
+ set_bit(PSMOUSE_FLAG_CMD1, &psmouse->flags);
+ }
+ clear_bit(PSMOUSE_FLAG_ACK, &psmouse->flags);
+ wake_up_interruptible(&psmouse->wait);
+
+ if (data == PSMOUSE_RET_ACK || data == PSMOUSE_RET_NAK)
+ goto out;
}
- if (psmouse->cmdcnt) {
- psmouse->cmdbuf[--psmouse->cmdcnt] = data;
+ if (test_bit(PSMOUSE_FLAG_CMD, &psmouse->flags)) {
+ if (psmouse->cmdcnt)
+ psmouse->cmdbuf[--psmouse->cmdcnt] = data;
+
+ if (test_and_clear_bit(PSMOUSE_FLAG_CMD1, &psmouse->flags) && psmouse->cmdcnt)
+ wake_up_interruptible(&psmouse->wait);
+
+ if (!psmouse->cmdcnt) {
+ clear_bit(PSMOUSE_FLAG_CMD, &psmouse->flags);
+ wake_up_interruptible(&psmouse->wait);
+ }
goto out;
}
+ if (psmouse->state == PSMOUSE_INITIALIZING)
+ goto out;
+
if (psmouse->state == PSMOUSE_ACTIVATED &&
psmouse->pktcnt && time_after(jiffies, psmouse->last + HZ/2)) {
printk(KERN_WARNING "psmouse.c: %s at %s lost synchronization, throwing %d bytes away.\n",
* psmouse_sendbyte() sends a byte to the mouse, and waits for acknowledge.
* It doesn't handle retransmission, though it could - because when there would
* be need for retransmissions, the mouse has to be replaced anyway.
+ *
+ * psmouse_sendbyte() can only be called from a process context
*/
static int psmouse_sendbyte(struct psmouse *psmouse, unsigned char byte)
{
- int timeout = 10000; /* 100 msec */
- psmouse->ack = 0;
- psmouse->acking = 1;
-
- if (serio_write(psmouse->serio, byte)) {
- psmouse->acking = 0;
- return -1;
- }
+ psmouse->nak = 1;
+ set_bit(PSMOUSE_FLAG_ACK, &psmouse->flags);
- while (!psmouse->ack && timeout--) udelay(10);
+ if (serio_write(psmouse->serio, byte) == 0)
+ wait_event_interruptible_timeout(psmouse->wait,
+ !test_bit(PSMOUSE_FLAG_ACK, &psmouse->flags),
+ msecs_to_jiffies(200));
- return -(psmouse->ack <= 0);
+ clear_bit(PSMOUSE_FLAG_ACK, &psmouse->flags);
+ return -psmouse->nak;
}
/*
* psmouse_command() sends a command and its parameters to the mouse,
* then waits for the response and puts it in the param array.
+ *
+ * psmouse_command() can only be called from a process context
*/
int psmouse_command(struct psmouse *psmouse, unsigned char *param, int command)
{
- int timeout = 500000; /* 500 msec */
+ int timeout;
int send = (command >> 12) & 0xf;
int receive = (command >> 8) & 0xf;
+ int rc = -1;
int i;
- psmouse->cmdcnt = receive;
+ timeout = msecs_to_jiffies(command == PSMOUSE_CMD_RESET_BAT ? 4000 : 500);
- if (command == PSMOUSE_CMD_RESET_BAT)
- timeout = 4000000; /* 4 sec */
+ clear_bit(PSMOUSE_FLAG_CMD, &psmouse->flags);
+ if (command == PSMOUSE_CMD_GETID)
+ set_bit(PSMOUSE_FLAG_WAITID, &psmouse->flags);
- /* initialize cmdbuf with preset values from param */
- if (receive)
- for (i = 0; i < receive; i++)
- psmouse->cmdbuf[(receive - 1) - i] = param[i];
+ if (receive && param)
+ for (i = 0; i < receive; i++)
+ psmouse->cmdbuf[(receive - 1) - i] = param[i];
+
+ psmouse->cmdcnt = receive;
if (command & 0xff)
if (psmouse_sendbyte(psmouse, command & 0xff))
- return (psmouse->cmdcnt = 0) - 1;
+ goto out;
for (i = 0; i < send; i++)
if (psmouse_sendbyte(psmouse, param[i]))
- return (psmouse->cmdcnt = 0) - 1;
-
- while (psmouse->cmdcnt && timeout--) {
-
- if (psmouse->cmdcnt == 1 && command == PSMOUSE_CMD_RESET_BAT &&
- timeout > 100000) /* do not run in a endless loop */
- timeout = 100000; /* 1 sec */
+ goto out;
- if (psmouse->cmdcnt == 1 && command == PSMOUSE_CMD_GETID &&
- psmouse->cmdbuf[1] != 0xab && psmouse->cmdbuf[1] != 0xac) {
+ timeout = wait_event_interruptible_timeout(psmouse->wait,
+ !test_bit(PSMOUSE_FLAG_CMD1, &psmouse->flags), timeout);
+
+ if (psmouse->cmdcnt && timeout > 0) {
+ if (command == PSMOUSE_CMD_RESET_BAT && jiffies_to_msecs(timeout) > 100)
+ timeout = msecs_to_jiffies(100);
+
+ if (command == PSMOUSE_CMD_GETID &&
+ psmouse->cmdbuf[receive - 1] != 0xab && psmouse->cmdbuf[receive - 1] != 0xac) {
+ /*
+ * Device behind the port is not a keyboard
+ * so we don't need to wait for the 2nd byte
+ * of ID response.
+ */
+ clear_bit(PSMOUSE_FLAG_CMD, &psmouse->flags);
psmouse->cmdcnt = 0;
- break;
}
- udelay(1);
+ wait_event_interruptible_timeout(psmouse->wait,
+ !test_bit(PSMOUSE_FLAG_CMD, &psmouse->flags), timeout);
}
- for (i = 0; i < receive; i++)
- param[i] = psmouse->cmdbuf[(receive - 1) - i];
+ if (param)
+ for (i = 0; i < receive; i++)
+ param[i] = psmouse->cmdbuf[(receive - 1) - i];
- if (psmouse->cmdcnt)
- return (psmouse->cmdcnt = 0) - 1;
+ if (psmouse->cmdcnt && (command != PSMOUSE_CMD_RESET_BAT || psmouse->cmdcnt != 1))
+ goto out;
- return 0;
-}
+ rc = 0;
+out:
+ clear_bit(PSMOUSE_FLAG_CMD, &psmouse->flags);
+ clear_bit(PSMOUSE_FLAG_CMD1, &psmouse->flags);
+ clear_bit(PSMOUSE_FLAG_WAITID, &psmouse->flags);
+ return rc;
+}
/*
* psmouse_sliced_command() sends an extended PS/2 command to the mouse
{
unsigned char param[2];
+ intellimouse_detect(psmouse);
+
param[0] = 200;
psmouse_command(psmouse, param, PSMOUSE_CMD_SETRATE);
param[0] = 200;
psmouse_command(psmouse, param, PSMOUSE_CMD_SETSTREAM);
}
+/*
+ * psmouse_set_state() sets new psmouse state and resets all flags and
+ * counters while holding serio lock so fighting with interrupt handler
+ * is not a concern.
+ */
+
+static void psmouse_set_state(struct psmouse *psmouse, enum psmouse_state new_state)
+{
+ serio_pause_rx(psmouse->serio);
+ psmouse->state = new_state;
+ psmouse->pktcnt = psmouse->cmdcnt = psmouse->out_of_sync = 0;
+ psmouse->flags = 0;
+ serio_continue_rx(psmouse->serio);
+}
+
/*
* psmouse_activate() enables the mouse so that we get motion reports from it.
*/
if (psmouse_command(psmouse, NULL, PSMOUSE_CMD_ENABLE))
printk(KERN_WARNING "psmouse.c: Failed to enable mouse on %s\n", psmouse->serio->phys);
- psmouse->state = PSMOUSE_ACTIVATED;
+ psmouse_set_state(psmouse, PSMOUSE_ACTIVATED);
+}
+
+
+/*
+ * psmouse_deactivate() puts the mouse into poll mode so that we don't get motion
+ * reports from it unless we explicitely request it.
+ */
+
+static void psmouse_deactivate(struct psmouse *psmouse)
+{
+ if (psmouse_command(psmouse, NULL, PSMOUSE_CMD_DISABLE))
+ printk(KERN_WARNING "psmouse.c: Failed to deactivate mouse on %s\n", psmouse->serio->phys);
+
+ psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
}
+
/*
* psmouse_cleanup() resets the mouse into power-on state.
*/
static void psmouse_disconnect(struct serio *serio)
{
- struct psmouse *psmouse = serio->private;
+ struct psmouse *psmouse, *parent;
- psmouse->state = PSMOUSE_CMD_MODE;
+ psmouse = serio->private;
+ psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
- if (psmouse->ptport) {
- if (psmouse->ptport->deactivate)
- psmouse->ptport->deactivate(psmouse);
- __serio_unregister_port(&psmouse->ptport->serio); /* we have serio_sem */
- kfree(psmouse->ptport);
- psmouse->ptport = NULL;
+ if (serio->parent && (serio->type & SERIO_TYPE) == SERIO_PS_PSTHRU) {
+ parent = serio->parent->private;
+ if (parent->pt_deactivate)
+ parent->pt_deactivate(parent);
}
if (psmouse->disconnect)
psmouse->disconnect(psmouse);
- psmouse->state = PSMOUSE_IGNORE;
+ psmouse_set_state(psmouse, PSMOUSE_IGNORE);
input_unregister_device(&psmouse->dev);
serio_close(serio);
* psmouse_connect() is a callback from the serio module when
* an unhandled serio port is found.
*/
-static void psmouse_connect(struct serio *serio, struct serio_dev *dev)
+static void psmouse_connect(struct serio *serio, struct serio_driver *drv)
{
- struct psmouse *psmouse;
+ struct psmouse *psmouse, *parent = NULL;
if ((serio->type & SERIO_TYPE) != SERIO_8042 &&
(serio->type & SERIO_TYPE) != SERIO_PS_PSTHRU)
return;
+ /*
+ * If this is a pass-through port deactivate parent so the device
+ * connected to this port can be successfully identified
+ */
+ if (serio->parent && (serio->type & SERIO_TYPE) == SERIO_PS_PSTHRU) {
+ parent = serio->parent->private;
+ psmouse_deactivate(parent);
+ }
+
if (!(psmouse = kmalloc(sizeof(struct psmouse), GFP_KERNEL)))
- return;
+ goto out;
memset(psmouse, 0, sizeof(struct psmouse));
+ init_waitqueue_head(&psmouse->wait);
init_input_dev(&psmouse->dev);
psmouse->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_REL);
psmouse->dev.keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_MIDDLE) | BIT(BTN_RIGHT);
psmouse->dev.relbit[0] = BIT(REL_X) | BIT(REL_Y);
- psmouse->state = PSMOUSE_CMD_MODE;
psmouse->serio = serio;
psmouse->dev.private = psmouse;
+ psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
serio->private = psmouse;
- if (serio_open(serio, dev)) {
+ if (serio_open(serio, drv)) {
kfree(psmouse);
serio->private = NULL;
- return;
+ goto out;
}
if (psmouse_probe(psmouse) < 0) {
serio_close(serio);
kfree(psmouse);
serio->private = NULL;
- return;
+ goto out;
}
psmouse->type = psmouse_extensions(psmouse, psmouse_max_proto, 1);
printk(KERN_INFO "input: %s on %s\n", psmouse->devname, serio->phys);
+ psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
+
psmouse_initialize(psmouse);
- if (psmouse->ptport) {
- printk(KERN_INFO "serio: %s port at %s\n", psmouse->ptport->serio.name, psmouse->phys);
- __serio_register_port(&psmouse->ptport->serio); /* we have serio_sem */
- if (psmouse->ptport->activate)
- psmouse->ptport->activate(psmouse);
+ if (parent && parent->pt_activate)
+ parent->pt_activate(parent);
+
+ if (serio->child) {
+ /*
+ * Nothing to be done here, serio core will detect that
+ * the driver set serio->child and will register it for us.
+ */
+ printk(KERN_INFO "serio: %s port at %s\n", serio->child->name, psmouse->phys);
}
psmouse_activate(psmouse);
+
+out:
+ /* If this is a pass-through port the parent awaits to be activated */
+ if (parent)
+ psmouse_activate(parent);
}
static int psmouse_reconnect(struct serio *serio)
{
struct psmouse *psmouse = serio->private;
- struct serio_dev *dev = serio->dev;
+ struct psmouse *parent = NULL;
+ struct serio_driver *drv = serio->drv;
+ int rc = -1;
- if (!dev || !psmouse) {
+ if (!drv || !psmouse) {
printk(KERN_DEBUG "psmouse: reconnect request, but serio is disconnected, ignoring...\n");
return -1;
}
- psmouse->state = PSMOUSE_CMD_MODE;
- psmouse->acking = psmouse->cmdcnt = psmouse->pktcnt = psmouse->out_of_sync = 0;
+ if (serio->parent && (serio->type & SERIO_TYPE) == SERIO_PS_PSTHRU) {
+ parent = serio->parent->private;
+ psmouse_deactivate(parent);
+ }
+
+ psmouse_set_state(psmouse, PSMOUSE_INITIALIZING);
+
if (psmouse->reconnect) {
if (psmouse->reconnect(psmouse))
- return -1;
+ goto out;
} else if (psmouse_probe(psmouse) < 0 ||
psmouse->type != psmouse_extensions(psmouse, psmouse_max_proto, 0))
- return -1;
+ goto out;
/* ok, the device type (and capabilities) match the old one,
* we can continue using it, complete intialization
*/
+ psmouse_set_state(psmouse, PSMOUSE_CMD_MODE);
+
psmouse_initialize(psmouse);
- if (psmouse->ptport) {
- if (psmouse_reconnect(&psmouse->ptport->serio)) {
- __serio_unregister_port(&psmouse->ptport->serio);
- __serio_register_port(&psmouse->ptport->serio);
- if (psmouse->ptport->activate)
- psmouse->ptport->activate(psmouse);
- }
- }
+ if (parent && parent->pt_activate)
+ parent->pt_activate(parent);
psmouse_activate(psmouse);
- return 0;
+ rc = 0;
+
+out:
+ /* If this is a pass-through port the parent waits to be activated */
+ if (parent)
+ psmouse_activate(parent);
+
+ return rc;
}
-static struct serio_dev psmouse_dev = {
- .interrupt = psmouse_interrupt,
- .connect = psmouse_connect,
- .reconnect = psmouse_reconnect,
- .disconnect = psmouse_disconnect,
- .cleanup = psmouse_cleanup,
+static struct serio_driver psmouse_drv = {
+ .driver = {
+ .name = "psmouse",
+ },
+ .description = DRIVER_DESC,
+ .interrupt = psmouse_interrupt,
+ .connect = psmouse_connect,
+ .reconnect = psmouse_reconnect,
+ .disconnect = psmouse_disconnect,
+ .cleanup = psmouse_cleanup,
};
static inline void psmouse_parse_proto(void)
int __init psmouse_init(void)
{
psmouse_parse_proto();
- serio_register_device(&psmouse_dev);
+ serio_register_driver(&psmouse_drv);
return 0;
}
void __exit psmouse_exit(void)
{
- serio_unregister_device(&psmouse_dev);
+ serio_unregister_driver(&psmouse_drv);
}
module_init(psmouse_init);
git://git.onelab.eu / linux-2.6.git / blobdiff